EP 1737918 A4 20081126 - THERMOFLUORESCENT PIGMENTS FOR SECURITY AND SAFETY APPLICATIONS
Title (en)
THERMOFLUORESCENT PIGMENTS FOR SECURITY AND SAFETY APPLICATIONS
Title (de)
THERMOFLUORESZENZPIGMENTE FÜR SICHERHEITSANWENDUNGEN
Title (fr)
PIGMENTS THERMOFLUORESCENTS POUR APPLICATIONS DE SECURITE ET DE SURETE
Publication
Application
Priority
- US 2005013013 W 20050419
- US 56351504 P 20040419
Abstract (en)
[origin: WO2005103174A2] The invention is directed to use of polythiophenes in a method to determine the genuineness of an article which method comprises providing an article treated with a composition comprised of a polythiophene, the polythiphene having a low temperature color and a weak fluorescence and the structure of the polythiophene being designed such that when the composition is placed in a heat-exchange relationship with the article, the low temperature color will change to a high temperature color and the weak fluorescence will change to a strong fluorescence when a pre-determined temperature is met or exceeded in the article, heating the article to a temperature that meets or exceeds the pre-determined temperature and detecting the color and the fluorescence change.
IPC 8 full level
G01N 37/00 (2006.01); C09D 11/00 (2006.01); C09D 11/02 (2006.01); C09D 11/10 (2006.01); C09D 165/00 (2006.01); G01N 21/76 (2006.01); G01N 21/77 (2006.01)
CPC (source: EP US)
C08G 61/126 (2013.01 - EP US); C08L 65/00 (2013.01 - EP US); C09D 11/02 (2013.01 - EP US); C09D 11/10 (2013.01 - EP US); C09D 11/50 (2013.01 - EP US); C09D 165/00 (2013.01 - EP US); G01N 21/78 (2013.01 - EP US); G01N 2021/7786 (2013.01 - EP US)
Citation (search report)
- No further relevant documents disclosed
- See references of WO 2005103174A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005103174 A2 20051103; WO 2005103174 A3 20071122; EP 1737918 A2 20070103; EP 1737918 A4 20081126; US 2007077661 A1 20070405; US 7833438 B2 20101116
DOCDB simple family (application)
US 2005013013 W 20050419; EP 05737498 A 20050419; US 58264906 A 20061018